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|
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiWayIf #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Main (main) where
import Blessings.Text
import Control.Concurrent.Extended
import Control.Exception
import Control.Monad
import qualified Data.Text.Extended as T
import qualified Data.Text.IO as T
import DBus
import DBus.Client
import DBus.Socket
import DBus.Internal.Message
import DBus.Internal.Types
import Flameshot.Internal
import qualified Flameshot.Internal.Process as P
--import System.Exit
import System.Environment
import System.IO
main :: IO ()
main =
getSessionAddress >>= \case
Just addr ->
withSocket addr $ \sock -> do
send sock (methodCall dbusPath dbusInterface "Hello")
{ methodCallDestination = Just "org.freedesktop.DBus"
} (\_ser -> return ())
_ <- receive sock
bracket connectSession disconnect (app sock)
Nothing ->
error
(mconcat
[ "DBus session bus address not found; "
, "is DBUS_SESSION_BUS_ADDRESS set properly?"
])
app :: Socket -> Client -> IO ()
app sock client = do
(captureFinish, awaitCaptureFinish) <- newRelay
(captureBegin, awaitCaptureBegin) <- newSemaphore
(daemonJoin, awaitDaemonJoin) <- newRelay
(daemonPart, awaitDaemonPart) <- newSemaphore
(daemonStop, awaitDaemonStop) <- newSemaphore
cGuiPath <- getEnv "FLAMESHOT_CAPTURE_PATH"
let
cLogTime = True
cLogHandle = stderr
hSetBuffering cLogHandle LineBuffering
logToTTY <- hIsTerminalDevice cLogHandle
(putLog, takeLog0) <- newChan
let
takeLog1 = if cLogTime then takeLog0 >>= prefixTimestamp else takeLog0
takeLog2 = showUnprintable <$> takeLog1
takeLog3 = if logToTTY then takeLog2 else stripSGR <$> takeLog2
takeLog = takeLog3
_ <-
addMatch client matchAny $ \case
Signal
{ signalPath = "/org/freedesktop/DBus"
, signalInterface = "org.freedesktop.DBus"
, signalMember = "NameOwnerChanged"
, signalSender = Just "org.freedesktop.DBus"
, signalDestination = Nothing
, signalBody =
[ Variant (ValueAtom (AtomText "org.dharkael.Flameshot"))
, Variant (ValueAtom (AtomText _old_owner))
, Variant (ValueAtom (AtomText new_owner))
]
}
->
if new_owner /= ""
then daemonJoin (busName_ (T.unpack new_owner))
else daemonPart
Signal
{ signalPath = "/"
, signalInterface = "org.dharkael.Flameshot"
, signalDestination = Nothing
, signalBody = Variant (ValueAtom (AtomWord32 _callId)) : rest
, ..
}
->
case signalMember of
"captureTaken" -> do
captureFinish (Just rawImage)
"captureFailed" -> do
captureFinish Nothing
_other -> do
captureFinish Nothing
where
[Variant (ValueBytes rawImage)] = rest
_sig ->
return ()
send sock (methodCall dbusPath dbusInterface "AddMatch")
{ methodCallDestination = Just "org.freedesktop.DBus"
, methodCallBody =
[ toVariant (T.intercalate ","
[ "type='method_call'"
, "eavesdrop=true"
, "path=/"
, "destination=org.dharkael.Flameshot"
, "member=graphicCapture"
] )
]
} (\_ser -> return ())
let
runDaemon =
P.run "flameshot" [] Nothing Nothing "" Nothing P.Callbacks
{ P.onOutLine = \_ s -> putLog $ "daemon stdout: " <> Plain s
, P.onErrLine = \_ s -> putLog $ "daemon stderr: " <> red (Plain s)
, P.onError = \_ _err -> do
daemonStop
, P.onExit = \_ _status -> do
daemonStop
, P.onStart = \_ -> return ()
}
runGui =
P.run "flameshot" ["gui", "-p", cGuiPath] Nothing Nothing "" Nothing P.Callbacks
{ P.onOutLine = \_ s -> putLog $ "gui stdout: " <> Plain s
, P.onErrLine = \_ s -> putLog $ "gui stderr: " <> red (Plain s)
, P.onError = \_ _err -> return ()
, P.onExit = \_ _ -> return ()
, P.onStart = \_ -> return ()
}
runReceiver =
forever $ receive sock >>= \case
ReceivedMethodCall _ser MethodCall
{ methodCallSender = Just _sender
, methodCallBody =
[ Variant (ValueAtom (AtomText _path))
, Variant (ValueAtom (AtomInt32 _delay))
, Variant (ValueAtom (AtomWord32 _callId))
]
}
-> do
captureBegin
_received ->
return ()
runLogPrinter =
forever $ takeLog >>= T.hPutStrLn stderr . pp
let
withTimeout time f s v io =
timeout time f >>= \case
Right x ->
io x
Left _time ->
putLog (s <> " " <> v <> " timeout after " <> blessTime time)
withTimeout_ time f s v io =
withTimeout time f s v (const io)
withThread_ runLogPrinter $ do
withThread_ runReceiver $ do
withThread runDaemon $ \daemonThread -> do
withTimeout 100000 awaitDaemonJoin "daemon" "join" $ \_daemonBusName -> do
withThread_ runGui $ do
withTimeout_ 100000 awaitCaptureBegin "gui" "join" $ do
_maybeRawImage <- awaitCaptureFinish
return ()
killThread daemonThread
withTimeout_ 100000 awaitDaemonPart "daemon" "part" (return ())
withTimeout_ 100000 awaitDaemonStop "daemon" "stop" (return ())
|
